Undertaking rhymes with:
overtaking, breathtaking, overtaking, painstaking, profittaking, basketmaking, bookmaking, breathtaking, dealmaking, decisionmaking, dressmaking, earthshaking, filmmaking, glassmaking, groundbreaking, handshaking, heartbreaking, homemaking, lawbreaking, lawmaking, matchmaking, moneymaking, moviemaking, muckraking, overtaking, painstaking, papermaking, peacemaking, policymaking, printmaking, profittaking, rulemaking, steelmaking